Fire-pot construction



March 1 1927.

O. J. GROEHN ET AL FIRE POT cous'mucmou Filed Jan. 5 1925 2 Sheets-Sheet l INVENTORJ 0770f 6/9049! Mal/w bus/(5m rz ATTORNEY? March '1 1927.

1,618,981 o. J. GROEHN ET AL FIRE POT cous'rnvcnok Filed Jan. 5 1925 1 2 Sheets-Sheet 2 INVENTORJ I arra .7. nozmv @114 BY MAL/19M alas/(Emu ATTORNEYJ the combustion :ohamber parts.

rest" 1s provided with a forward extension Patented Mar. 1, 1927.

' UNITED STATES PAT T OFFICE OTTO J. GROEHN A'ND WILLIAM 'BLASKEWITZ, 0F DETROIT, IVETrCEEIGAN, ASSIGNORS TO CLAYTON & LAMBERT MANUFACTURING COMPANY, 'OF"DETROIT, MICHIGAN,

' CORPORATION 'OF MICHIGAN.

FIRE-POT CONSTRUCTION.

Application filedlanuary 5, .1925. Serial No. 661.

The invention relates to fire pots and refers more particularly to fire pot constructions'such asareadapted for plumbers use or where other .uses for oil burning devices of this character are desired.

One of the objectsof the invention is to provide a fire pot construction which is provided with a short direct fuel feed to -:the burner. A further object is to provide means for efiiciently heating the fuel during its passage to" the burner. Another novel feature resides in the provision'of an efiicient'burner arrangement. Other objects include a fire pot construction which may be readily assembled also a burner construction employing a single valve.

With these and other objects in view, the invention resides in the novel features of construction and combination and arrangements of parts as more fully hereinafter described and claimed.

Referring to the drawings V Figure 1 is a vertical elevation partly in section, Figure 2 is a plan with the healthiest and-the upper-part of the combustion chamber removed Figure 3 is a "perspective .view showing the flame plate, and p :Figure 4 is=ap1an view of'the ifire'pot.

In the :drawings reference character :10 :indicates the tank of :a firepot having :the usual filler 10, pump 11, and supporting standards 12 which carry the combustion chamber, the latter comprising lower and upper parts'13 and 14 respectively. The

lower part 13 preferably has 1 a threaded en.- gagement with the standards 12, the standards at their other ends being bolted to the'spider 15' rigidly mounted on the tank 10. The upper part of the" combustion chamber 14 may be bolted to the lower part 13; 'ahearth rest '16 being located between The hearth formed with openings 17 adapted to receive a suitable bracket (not shown) :for

' supporting soldering irons and other tools.

'(Fuelin the nature of a hydrocarbon,

such as gasoline, etc, is supplied upwardly from tank lO throughthe feed pipe 1 8 which passes through the intake'manifold 19, pref- I *era bly at the point where 'theunani'fold di-. vides formingthe oppositely extending confold .19 to the burners 22.

combustion chamber is positioned the :fiame;

plate 24' havinga curved part 25 adapted to fit-around the manifold 19 and the laterally extending portions 26 cooperating with .the

slots 23 to deflectthe flame therefrom toward the center and thence upwardly of the fire potcombustion chamber. 7

The .fuel after passing through the vertical feed pipe 18 and gmanifo'ld '19 passes above one ofthe conduits such as the conduit 21, through pipes 27-and 28, the latter pipe preferably containing a wire stuffing v29 whereby the gas passing through pipe .28 is uniformlydistributed therein and conse-' quently heated uniformly. From the pipe :28 :the gas passes by way of-conduit 30 to the valve chamber 31 whence its passage into the intake manifold 19 is regulated by a needle valve 32 operable by a handle 33.

The end of the manifold 19 adjacent the valve chamber is preferably open-so that air is entrained at 34 with the incoming fuel and conductedtherewith through the mani- Pivoted to'the valve chamber as at 35, is a lighter member 36 operable-by a handle 37- and. having a deflector portion 38 curved so as to deflect the gas rearwardly of the valve chamber qas it escapes therefrom.

Thelighter 36 permits convenient means for initially lighting the fire-andfby reason of the curved portion 38 the gas is rearwardly directed in concentrated jet which maybe lighted. After the burners 22 are :lighted the lighter 36 is swung on its pivot 35 to one side.

If :desired, a heat shield 39 behprovided between'thetank 1O and-the firechamher to protect :the tank from heat from the fire chamber; V

- From the foregoing it will be readily seen that we'have provided a short direct feed for the "fuel, passing through the intake manifold where it ispreheated" and then passing above one of theburners: In order to more positively heat the fuel as it passes over the burner'through pipe'28, the burner may be provided withopenings 4'0 along the upper part which will cause -a-flame to impinge uponthe pipe 28. By this-construction and the provision of the wire stuffing 29, the intake gas is thoroughly and uniformly heated, both the gas and the mixture passing through the combustion chamber before ignition. Vie also have provided a construction which eniploys only a single valve for controlling the supply of fuel, together with an improved means for initially lighting the burners. Other novel features include the provision of a construction which is compact and readily assembled.

While it is believed that from the foregoing description, the nature and advantage of our invention will be readily understood, we desire to have it understood that we do not limit ourselves to what is herein shown and described and that such changes may be resorted to when desired as fall within the scope of the claims.

What we claim as our invention is 1. In a fire pot construction, a combustion chamber, a pair of opposed burners within said chamber, an intake manifold lying between said burners, a flame plate overlying the manifold. and arranged to direct the flame from said burners inwardly of the combustion chamber, a source of fuel, and means for supplying said manifold with the fuel.

2. In a fire pot construction, a combustion chamber, a pair of opposed burners within said chamber, an intake manifold lying between said burners, a flame plate overlying the manifold and arranged to direct the flame from said burners inwardly of the combustion chamber, a source of fuel, and means for supplying said manifold with the fuel, said means including a conduit for subject-ing the fuel to the heat of the combustion chamber prior to its admission into said manifold.

3. In a fire pot construction, the combination with a fuel tank, of a combustion chamber supported above the fuel tank, an intake manifold extending transversely of the combustion chamber, a plurality of burners communicating with the manifold and lying at opposite sides thereof, said manifold and burners lying in a common plane, and a fuel feed pipe extending upwardly from said tank through said manifold and communicating with said manifold through a portion extending directly above one of the burners.

4. In a fire pot construction, the combination with a fuel tank. of a combustion chamher, an intake manifold extending transversely of the combustion chamber, a plurality of burners communicating with the manifold and lying at opposite sides thereof adjacent opposite walls of the combustion chamber, and a fuel feed pipe extending upwardly from said tank through said manifold, and means adjacent one of the burners for heating the fuel, and means for conducting the heated fuel to said manifold.

5. In a fire pot construction the combination with a fuel tank, of a substantially rectangular shaped combustion chamber supported above the fuel tank, an intake manifold extending transversely and centrally of the combustion chamber, a plurality of burners communicating with the manifold and lying at opposite sides thereof adjacent 0pposite walls of the combustion chamber, and a fuel feed pipe extending upwardly from said tank through said manifold, a pipe communicating with said fuel feed and extending within the combustion chamber at one side thereof adjacent one of the burners, and means associated with the last said burner for heating the fuel in said pipe.

6. In a lire pot construction, the combination with a fuel tank, of a combustion chamber supported above the fuel tank, a burner within the combustion chamber adjacent a side wall thereof and provided with means for directing a flame et away from the wall into the combustion chamber, a pipe for con ducting fuel upwardly from said tank, said pipe extending adjacent the aforesaid combustion chamber wall and overlying the burner, and means associated with the burn er for directing a flamejet on said pipe.

7. In a fire pot construction the combination with a fuel tank and a combustion chamber, of a pair of opposed burners within the combustion chamber, an intake manifold lying between the said burners, said manifold being divided at one end to form a connection with each of the burners, and a conduit for supplying fuel to the manifold, said conduit extending upwardly from the tank and through the manifold adjacent to its point of division and having a portion di rectly overlying one of the burners, the saidlast mentioned burner having fuel discharge openings directed upwardly towards the overlylng portion of the conduit.

8. In a fire pot construction, the combination with a fuel tank and combustion charm-- ber, of standards extending upwardly from said tank for supporting said combustion chamber, an intake manifold extending transversely and substantially centrally of said combustion chamber, a pair of burners lying parallel with and on opposite sides of and in the horizontal plane of the said manifold, each of said burners being provided with afuel discharge opening for directing fuel inwardly of the combustion chamber, and means for supplying fuel to said manifold. 1

9. In a fire pot construction, the combination with a fuel tank and combustion chamber. of standards extendingupwardly from said tank for supporting said combustion chamber, an intake manifold extending transversely and substantially centrally of said combustion chamber, a pair of burners lying parallel with and on opposlte sides of and in the horizontal plane of the said manifold, each of said burners being provided with a fuel discharge opening for directing fuel inwardly of the combustion chamber, and means for supplying fuel to said manifold, said means comprising a conduit ex tending upwardly from the tank and through themanifold at the point of its connection with the said burners, said conduit having a portion directly overlyingone of said burners, said last named burner having a fuel discharge opening directed upwardly towards said overlying portion of the conduit.

10. In a fire pot construction, the coinbination with a fuel tank and combustion chamber, of standards extending upwardly from said tank for supporting said combustion chamber, an intake manifold extending transversely and substantially centrally of said combustion chamber, a pair of burners lying parallel with and on opposite sides of and in the horizontal plane of the said ma nifold, each of said burners being provided with a fuel discharge opening for directing fuel inwardly of the combustion chamber, and means for supplying fuel to said manifold, said meanscomprising a conduit extending upwardly from the tank and having a portion overlying one of said burners, said last named burner having a fuel discharge opening directed upwardly toward said overlying portion of the conduit.

11. In a fire pot construction, a combustion chamber, burners Within said chamber, an intake manifold in proximity to said burners, a flame plate associated with the manifold and arranged to direct the flame from the burners inwardly of the combustion chamber, a source of fuel, and means for supplying the manifold with the fuel.

12. In a fire pot construction, the combination with a fuel tank of a combustion Chamber supported above the fuel tank, a pair of opposed burners within the combustion chamber, an intake manifold lying between and in the plane of the said burners, a flame plate overlying the manifold and arranged to direct the flame from the burners inwardly of the combustion chamber, and a Conduit extending upwardly from the fuel tank for supplying fuel to the manifold, said conduit having a portion directly overlying one of the burners, the said burner being provided with discharge openings directed upwardly towards the overlying portion of the conduit.

In testimony whereof we aflix our signatures.

OTTO J. GROEHN. WILLIAM BLASKEWITZ. 

